Oil can pump



FIG. 1.

Dec. 19, 1961 e. E. HONISEK ET AL 3,013,702

OIL CAN PUMP Filed Sept. 25, 1959 IN V EN TORS 650265 5. HON/SE45 cHe/s re 5e a. F5775,

United States Patent Ofifice 3,013,702 Patented Dec. 19, 1961 This invention relates to a novel hand pump adapted to be installed through an opening made in the top of an oil can, such as a sealed quart can.

The primary object of the invention is to provide a more efiicient, more rugged, and easier-operating device of this kind which can be readily transferred from can to can, and which, when installed in a can, seals the oil therein from contamination and dirt, in a more positive and effective manner than is obtainable from the use of hand oilers which must be periodically taken apart and refilled, with accompanying hazards of introducing contaminants and dirt.

Another object of the invention is the provisionof a device of the character indicated above with simpler and more efficient valving means which is more effective" in'excluding outside contaminants and dirt than ball valve means, usually formed in devices of this kind, and which provides faster, more complete, and longer-lasting sealing effects, and permits of using greater pumping pressures.

Other important objects and advantageous features of the invention will be apparent from the following description and the accompanying drawings, wherein, for purposes of illustration only, a specific form of the invention is set forth in detail.

In the drawings:

FIGURE 1 is a perspective view showing a device of the invention installed on an oil can;

FIGURE 2 is an enlarged side elevation, partly in vertical section, of such device, showing valve means in closed positions in full lines, and in open positions in has an externally threaded lower end portion 46. Threaded on the lower end portion 46 is a tubular pump plunger or piston 48.

The piston or plunger 48 comprises a solid cylindrical body 50 having in and opening to its upper end a threaded axial bore 52 in which the lower end portion of the tube 40 is threaded, and having in and opening to its lower end an upwardly tapering valve chamber 54 which opens at its upper end into the bore 52. The plunger 48 has a squared lower end 56 against which bears a flexible, compressible, and resilient upper valve tubular cylindrical combination pump cylinder and valve chamber 66, which has a lower flat end wall 68 which is imperforate except for a central intakepart 70. As shown in FIGURE 2, the post 70 is surrounded at the lower side of the end wall 66 by a collar 72, and the end phantom lines, and the mechanism in unoperated conportion 16, an outwardly and downwardly declining portion 18, and an inwardly and upwardly curved arcuate lower portion 20 having a terminal 22 which can bear against a can C, such as a one-quart sealed oil can.

The base 12 has a web 24 and depending side flanges 26, and suitably fixed or otherwise formed on the underside of and centered relative to the circular portion 28 of the base is a depending, relatively large diameter threaded boss 30. Compressible pads 32 and 34 are secured to the underside of the web 24 and extend therebelow the side flanges and the boss for pressure contact with the upper surface of a can top 36, as indicated in FIGURE 2. Suitably fixed in a central opening 38 in the web 24 and theboss is the lower end of an upstanding perpendicular oil spout tube 40 terminating at its upper end in a laterally angled applicator nozzle 42.

Suitably fixed to the boss 30 in the opening 38 thereof, and permissibly integral with the lower end of the spout tube 40, and communicating with the spout tube, is the perpendicular upper end portion 42 of a rigid declining uptake tube 44, which is angled out of the perpendicular, in a direction away from the handle 14, and

wall 68 is upwardly offset from the lower end of'the side wall 74 of the combination 66. Resting upon and covering the upper side of the end wall 68 is a flexible, resilient, and compressible lower valve disc 76, having a central, partially severed valve flap 78 therein. Resting upon the upper side of the lower valve 76 is a lower hardened, preferably steel ring or flat washer 80 having a central hole 82 therein. A helical spring 84, working freely but closely in the combination 66, is compressed between the washers 62 and 80 and serves normally to keep the valve flaps 60 and 78 closed. The valve discs 58 and 76 are preferably made of neoprene so that they are long-lived mechanically and are resistant to deterioration from contact with oil and substances present therein.

A fixed upstanding lug 84 on the upper end of the side wall 74 of the combination 66 has in opening 86 therein, through which is engaged a hook 88 on the lower end of an operating rod 90 which extends parallel spaced along the side of the uptake tube 40 at the side thereof facing the handle 14, and Whose upper end portion slides through an angled bore 92 provided in the boss and the base web.

The rod 90 has an enlarged head 94 on its upper end which seats in a chamfered opening 96, through which the rod 90 extends, which is provided in the inward end of a pump-operating lever 98. The lever 98 is preferably an elongated fiat strip or bar having a straight inner end portion 100, containing the opening 96 and terminating in a downturned stop 102 for engaging the base web 24, a straight intermediate portion 104 which is disposed at an outward and upward angle relative to the portion 100, and a slightly upwardly bowed outer end portion 106, which is disposed at a slight outward and downward angle relative to the intermediate portion 104, and is normally spaced upwardly from the base 12, as indicated in FIG- URE 2, in a position to be manually depressed to start a pumping action. The lever 98 is provided, at the meeting of the inner end and intermediate portions and 104, respectively, an arcuate portion 105 provided with a longitudinal slot 108, upwardly through which extends, as a part of the web 24, the shank 107 of a T-shaped retainer 109, which has a cross head 111 bridging the slot 108 and bearing upon the upper side of the lever, so that the lever is confined to rock upon the base web 24, at the oint where the arcuate portion 105 bears upon the web 24.

Manual depression of the operating lever 98 pulls the combination pump cylinder and valve chamber 66 upwardly relative to the piston 48, against the resistance of the spring 84. The elevation of the combination 66 relative to the piston 48 compresses the spring 84, so that release of the lever 98 enables the spring to expand and push the combination downwardly relative to the piston, so that oil is sucked through the port 70 from the can C and enters the combination 66, so that the next manual depression of the lever 98 and accompanying elevation of the combination serves to close the lower valve flap 78, compress the oil within the combination, open the upper valve flap 60, and force oil upwardly through the uptake tube 44 and the spout tube 40, and out of the nozzle 42. On release of the lever 98 further discharge of oil from the nozzle ceases, and such oil as may be above the upper valve flap 60 is retained in the tube 44- by the closing of the upper valve flap 60, as a reserve to start the next pumping action.

The device is installed on an oil can C simply by making, by suitable means, of a hole in the can top 36, and threading the boss downwardly in the hole. The boss 30 has a lateral flange 110 just below the base web 2-3- against which bears a resilient, flexible, and compres sible sealing ring 112, preferably of neoprene, which is circumposed on the boss, and which is compressed by the installing of the device, to seal the can top hole around the boss 30.

Although there has been shown and described herein a preferred form of the invention, it is to be understood that the invention is not necessarily confined thereto, and that any change or changes in the structure of and in the relative arrangements of components thereof are con templated as being within the scope of the invention as defined by the claims appended hereto.

What is claimed is:

1. An oil can pump comprising a base having a web, a boss fixed on the web and depending therefrom to be screwed into a hole provided in the top of an oil can, said boss having a central opening therethrough, an upstanding spout tube having a lower end fixed to the boss and 21 depending oil uptake tube having an upper end fixed to the boss in communication with the spout tube, said uptake tube having an open lower end, and enlarged piston fixed on the lower end of the uptake tube, said piston having therein a valve chamber opening to the lower end of the piston and communicating with the lower end or" the uptake tube, a tubular member slidably telescoped on the piston and having an open upper end receiving the piston and a closed lower end wall, said lower end wall being provided with a central intake port and said piston having a flat lower end, an upper compressible valve disc engaged with the lower end of the piston and extending across the intake port, said upper disc having a central valve flap covering a valve opening provided in the upper disc, a lower compressible valve disc resting upon said lower end wall and having a central valve flap covering a valve opening provided in the lower disc, a helical spring confined in said tubular member and compressed between the upper and lower valve discs, and manual operating means mounted on the base and operatively connected to said tubular member for elevating the tubular member relative to the piston against the resistance of the spring.

2. An oil can pump comprising a base having a web, a boss fixed on the Web and depending therefrom to be screwed into a hole provided in the top of an oil can, said boss having a central opening therethrough, an upstanding spout tube having a lower end fixed to the boss and a depending oil uptake tube having an upper end fixed to the boss in communication with the spout tube, said uptake tube having an open lower end, and enlarged piston fixed on the lower end of the uptake tube, said piston having therein a valve chamber opening to the lower end of the piston and communicating with the lower end of the uptake tube, a tubular member slidably telescoped on the piston and having an open upper end receiving the piston and a closed lower end Wall, said lower end well being provided with a central intake port and said piston having a flat lower end, an upper compressible valve disc engaged with the lower end of the piston and extending across the intake port, said upper disc having a central valve flap covering a valve opening provided in the upper disc, a lower compressible valve disc resting upon said lower end wall and having a central valve flap covering a valve opening provided in the lower disc, a helical spring confined in said tubular memher and compressed between the upper and lower valve discs, and manual operating means mounted on the base and operatively connected to said tubular member for elevating the tubular member relative to the piston against the resistance of the spring, and rigid washers interposed between related ends of the spring and the upper and lower valve discs, the washers having central openings registered with the openings in the valve discs.

3. An oil can pump comprising a base having a web, a boss fixed on the web and depending therefrom to be screwed into a hole provided in the top of an oil can, said boss having a central opening therethrough, an upstanding spout tube having a lower end fixed to the boss and a depending oil uptake tube having an upper end fixed to the boss in communication with the spout tube, said uptake tube having an open lower end, an enlarged piston fixed on the lower end of the uptake tube, said piston having therein a valve chamber opening to the lower end of the piston and communicating with the lower end of the uptake tube, a tubular member slidably telescoped on the piston and having an open upper end receiving the piston and a closed lower end wall, said lower end wall being provided with a central intake port and said piston having a fiat lower end, an upper compressible valve disc engaged with the lower end of the piston and extending across the intake port, said upper disc having a central valve flap covering a valve opening provided in the upper disc, a lower compressible valve disc resting upon said lower end wall and having a central valve flap covering a valve opening provided in the lower disc, a helical spring confined in said tubular member and compressed between the upper and lower valve discs, and manual operating means mounted on the base and operatively connected to said tubular member for elevating the tubular member relative to the piston against the resistance of the spring, said base being pan-shaped and having side flanges depending from said web, and can top engaging compressible pads secured to the underside of the web and normally extending below the side flanges.

References Cited in the file of this patent UNITED STATES PATENTS 376,696 Webster Jan. 17, 1888 1,362,838 Brandt Dec. 21, 1920 1,635,215 Johnson et al. July 12, 1927 2,000,883 Cullen et a1 May 7, 1935 2,595,118 Anderson Apr. 29, 1952 FOREIGN PATENTS 533,669 Belgium Dec. 15, 1954 

